Current Dual-Fuel™ Technology Dual-Fuel™ is fitted onto a standard diesel engine‚ which operates unchanged‚ except power is generated by mostly clean natural gas. A measured quantity of natural gas is mixed with the air just before it enters the cylinder and compressed to the same levels as the diesel engine to maintain efficiency. The natural gas mixture does not ignite spontaneously under compression‚ so the Dual-Fuel™ engine uses a small injection of diesel fuel‚ around 10% of the total energy of
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VALVETRONIC ENGINE TECHNOLOGY 1. INTRODUCTION The automobile has been providing individual mobility for more than 100 years. This mobility is made possible first and foremost by combustion engines drawing their power from fossil energy carriers‚ which‚ even today‚ provide the foundation in generating mechanical drive power in the automobile. The primary objectives in developing drive systems are to curb fuel consumption and reduce CO2 emissions. In an effort to meet this challenge
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Web Search Engines Typically‚ Web search engines work by sending out a spider to fetch as many documents as possible. Another program‚ called an indexer‚ then reads these documents and creates an index based on the words contained in each document. Each search engine uses a proprietary algorithm to create its indices such that‚ ideally‚ only meaningful results are returned for each query. Sites that let you search multiple indexes simultaneously include: • Yahoo (http://www.yahoo.com) • search
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Engine working Four stroke configuration Operation [pic] Four-stroke cycle (or Otto cycle) 1. Intake 2. Compression 3. Power 4. Exhaust As their name implies‚ operation of four stroke internal combustion engines have four basic steps that repeat with every two revolutions of the engine: 1. Intake o Combustible mixtures are emplaced in the combustion chamber 2. Compression o The mixtures are placed under pressure 3. Power o The mixture is burnt
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you agree with the idling engine ban? A few years ago‚ the Environmental Protection Department proposed to legislate the idling engine ban‚ under which all vehicles must switch off their engines. I totally disagree with the idling engine ban‚ for I think that this policy not only cannot bring benefits to pedestrians in air quality‚ but instead brings harm to drivers and passengers. To start with‚ the idling engine ban brings inconvenience to drivers. As the idling engine ban proposes that a driver
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REINDEER AND ENGINE – COMMENTARY The poem ’Reindeer and Engine’ by Josephine Jacobsen is an extract from the poet’s 1966 work ’The Animal Inside’. The poem is about a reindeer who is fleeing from a steam engine‚ in the forests of Finland. However‚ wherever the reindeer seems to turn‚ engine tends to follow. The poet Josephine Jacobsen introduces a very relevant issue‚ from the title of the poem itself – that of nature versus technology. In a sense‚ the reindeer and the engine are contrasting ideas
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combustion type diesel and gasoline engines can be considered as similar. Simply‚ both engines converts chemical energy into mechanical one by burning fuel. In combustion engines the combustion (explosion of fuel) occurs at combustion chamber with ‚ generally‚ help of oxidizer (air‚ another fluid‚ etc.). The output‚ high heat and pressure of the burning process is transfered to other components of the engines which expose pressure as a mechanical energy. Some of these parts can be examplified as turbines
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departure would be even further delayed. More snow and ice accumulated on the wings during that period‚ and the crew was aware of that fact when they decided to make the takeoff. The crew did not activate the engine anti-ice system. The copilot announced and the pilot confirmed that the plane’s own engine anti-icing system was turned off. First Officer Pettit noted several times to Captain Wheaton that the instrument panel readings he was seeing did not seem to reflect reality (he was referring to the fact
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whereas driving a diesel-powered truck shows that you do not care about environment with your smoky‚ loud engine and you can usually be found at a gas station fueling up. However‚ are the stereotypes correct? With advancement in clean diesel technology‚ lower costs in overall maintenance and better fuel efficiency as well as a safer‚ stronger engine‚ there is a clear advantage within diesel engines. First‚ let’s look at cost using a GMC Sierra 2500HD. Buying the truck initially is more costly
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while I was doing this unit. The main sections that I am going to cover are – the search engines used‚ search techniques used and search criteria‚ sources of information used‚ comparison of the internet and non- internet sources and the quality of the information found. Internet Source Most frequently used search engine for this unit was Google as it is quite obvious but I also tried to use other search engines which I am not that familiar to such as Bing‚ Ask Jeeves‚ Dogpile‚ Answers‚ MSN Search
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